Door lock



F. J. MccoNNELL DooR Locx Filed April 18. 1951 lllllllllllnil Q Feb. 22, 1955 l N VEN TOR. ffw/wr J /Vc CoA/Nsu United States Patent O DOOR LOCK Frank J. McConnell, New Britain, Conn., assgnor to The American Hardware Corporation, New Britain, Conn., a corporation of Connecticut l Application April 18, 1951, Serial No. 221,646

12 Claims. (Cl. 70-210) This invention relates to door locks and more particularly to door locks of the cylindrical type.

Such locks usually include a case that is insertable into a hole in a door stile and contains a retractor mechanism that is operated by rollback members which are actuated' by an inner and an outer knob that extend from the inner and outer sides of the case respectively. The retractor mechanism is operatively connected to a separate latch bolt unit which is insertable into a hole in the edge of the door stile and at right angles to the axis of the lock casing.

An object of this invention is to provide such a cylindrical lock having improved means for selectively rendering the outer operating knob inoperative to thereby preiC/ent operation of the latch bolt from the outer side of the oor.

A further object of this invention is the provision of such a lock having manually operable means in the inner operating knob for dogging the outer knob against operation.

A further object is the provision of an improved dogging mechanism which may be released either by inserting a simple member into a small opening provided in the outer knob, or by key controlled means contained in said knob.

A still further object of the invention is to provide such a cylindrical lock having a key controlled mechanism in the outer knob which may be turned by a key to release the dogging mechanism and which, upon further rotation Will cause retraction of the latch bolt, through the retractor mechanism, to permit opening of the door.

Further objects and advantages of this invention will be more clearly understood from the following description and accompanying drawings in which:

Fig. 1 is a plan view of my improved cylindrical lock, partly in horizontal section, illustrating the construction thereof and showing my improved dogging mechanism in undogged condition. f F Fig. 2 is a sectional end View thereof on line 2-2 of Fig. 3 is a fragmentary view, partly in horizontal section, showing the position of the mechanism when the outer knob is dogged against rotation.

Fig. 4 is a sectional end View, on line 4 4 of Fig. 3, with some of the parts removed to more clearly illustrate the mechanism.

Fig. 5 is a fragmentary plan view showing a portion of the dogging mechanism in the position wherein it is about toy be released.

Fig. 6 is an end view of the retractor employed in the said mechanism.

Fig. 7 is a side view of said retractor with a portion; thereof broken away to illustrate its construction.

Fig. 8 is a fragmentary plan view, partly in horizontal section, illustrating the use of a key controlled means with my improved dogging mechanism.

Fig. 9 is a fragmentary view, partly in horizontal section, illustrating the position of the key controlled means when the dogging mechanism is released.

Fig. 10 is an end View on line 10-10 of Fig. 9.

In the embodiment of my invention illustrated in the drawing, the numeral 5 generally indicates the case of a cylindrical lock which includes a cup-shaped member 6 and a cover 7. The cup-shaped member 6 has a tubular outer sleeve 8 extending from the bottom wall thereof and a portion 9 of said outer sleeve extends through the said wall and into the interior of the case. The cover 7 ice fl carries a similar inner sleeve 10, as illustrated in Fig. l.

The case 5 contains a sub-frame 11 which carries guide members 12-12 that slidably support a retractor 13 constructed of a U-shaped member 14 having side plates 15-15 secured to the opposite sides thereof` and straddling the guide members 12-12 to slidably retain the retractor thereon as illustrated in Fig. 2. The case and its associated mechanism as above described is fully disclosed in the co-pending application of Ernest L. Teich et al., Serial No. 211,940.

The sleeves 8 and 10 rotatably support inner and outer knob shanks 16 and 17, respectively, which are retained within the said sleeves by locking members 18 and 19 as clearly described in the co-pending application of Ernest L. Teich et al., Serial No. 211,939. The shank 16 has an outer operating knob 20 secured thereto, and the shank 17 has a similar inner operating knob 21 secured thereto in the manner fully described in the copending'application of Nicholas A. Welch etal., Serial No. 208,743, and now Patent No. 2,675,692, dated April 20, 1954.

The sleeves 8 and 10 have enlarged bores at their inner ends which rotatably receive annular connectors 22 and 23, respectively, that are operatively connected to their respective knob Shanks 16 and 17 by tongue and slot connections as at 24-24. The walls of the connectors contain diametrically opposed notches 25-25 which receive the straight portions of the rollback members 26 and 27 that operatively engage the retractor 13 as fully described in the above mentioned co-pending application of Ernest L. Teich et al., Serial No. 211,940. The portion 9 of the sleeve 8 is also provided with diametrically opposed notches 28-28 forming abutments between which the straight portion 26-a or the rollback 26 is received for the purpose to be hereinafter more fully described.

It will be understood that when either of the knobs 20 or 21 is rotated, it will cause the rotation of its respective roll-back which will in turn cause the retractor to move inwardly in the case 5 and withdraw the latch bolt.

In order to dog the outer knob against rotation, it is necessary to move the roll-back 26 in the notches 25--25 and relatively to the connector 22 and toward the portion 9 of the sleeve 8 until the straight portion 26-a of the roll-back is located within the notches 28-28. When the roll-back is in this position, rotation of the outer knob is prevented by the engagement of said portion 26-a of the roll-back with the sides of the notches 28-28 and therlfore the retractor 13 cannot be retracted by the outer The mechanism I employ to move the roll-back into dogging position, as above described, includes a pushbutton 29 that is slidably mounted in an opening 30 in the front wall of the inner knob 21 and has secured thereto an extension member 31 which has abutment surfaces .3l-a formed thereon to receive one end of a compression spring 32 whose opposite end is in engagement with the said end wall of the knob 21 and urges the push button' inwardly with respect to the knob. The said push-button 29 is provided with an annular shoulder 29-a which engages the marginal edge of theopening 30 to limit the outwardmovement of the button with respect to the said The-inner spindle section 35 is cylindrical in form and' projects through an axial opening in the roll-back 27 whereby it is slidably supported. The end of said inner section 35 extends into the case 5 and is provided with an annular llange 39 that has a tapered annular surface 39-a as clearly illustrated in the drawings. The spindle section 35 has a bore 40 in which the inner end of the outer spindle section 36 is slidably supported. The said outer spindle section is slidably mounted in and projects through an axial opening in the roll-back 26 and in a bushing 16a in the shank 16 and extends into the outer knob 20 as":

Patented Feb. 22, 1955- tudinally movable through the outer operating member independently of the other spindle section, and means on said independently movable spindle section for causing the release of said retaining means to permit movement of the spindle and rollback out of dogging position.

4. In a door lock including a casing, a retractor for a latch bolt, an inner and an outer operating member, an inner rollback operatively connected with the inner operating member, an outer rollback operatively connected with the outer operating member and movable relatively thereto, and abutments in the case adapted to be engaged by the said outer rollback to prevent rotation thereof and thereby dog its operating member; a spindle unit extending longitudinally of said lock and including an inner and an outer section, spring means between said sections adapted to maintain them in extended relationship, means operable through said inner operating member for moving said spindle unit longitudinally towards the outer operating member to thereby move said outer rollback into engagement with said abutments, retaining means for retaining the spindle and rollback in dogging position, and disengaging means carried by the outer section 0f the spindle for disengaging the retaining means from the spindle; the said outer section being movable relatively to the inner section and against the tension of the spring means therebetween to cause operation of the disengaging means.

5. The subject matter set forth in claim 4 wherein a spring is included for normally urging the rollback out of engagement with the abutments when the spindle is disengaged from the retaining means.

6. In a door lock including a case, a retractor, a rollback for operating said retractor, an operating member extending from said case for rotating the rollback to cause withdrawal of the retractor and abutments on said case adapted to be engaged by said rollback to prevent rotation thereof by its operating member; a spindle extending through said case and retractor and including a flange and a shoulder that engages said rollback, retaining means on said rectractor engageable by said flange, the said spindle being movable towards the operating member to thereby carry the rollback into engagement with said abutments and the ange into engagement with said retaining means, and means movable independently of said flange and into engagement with said retaining means for causing the release of the spindle by the retaining means to permit the rollback to be disengaged from said abutments.

7. The subject matter set forth in claim 6 wherein said retaining means include a pair of pivotally mounted oppositely disposed fingers carried by the retractor and having notches in their free ends adapted to receive the ange on the spindle, and spring means for urging said fingers into engagement with said flange to thereby retain the spindle and rollback in dogging position, said movable means being adapted to enter between said fingers to thereby spread said lingers and release said ange to permit the return of the spindle to normal position.

8. In a door lock mechanism including a retractor, a rollback for retracting said retractor, an operating member for rotating said rollback and an abutment on said case engageable by the rollback when in dogging position to prevent rotation thereof by the operating member; a spindle longitudinally slidable in said mechanism and including an inner section having an axial bore, an

outer section extending into said bore and movable independently of the inner section, a spring member contained within said bore and between said inner and outer sections, the said outer section of the spindle extending through the rollback and having a shoulder thereon for engaging the rollback to move it into engagement with said abutment, means operable for moving the spindle into advanced position to cause movement of the rollback into engagement with the abutment, a detent on the inner section, retaining means engageable with said detent for retaining the spindle in advanced position and the rollback in engagement with the abutment, disengaging means carried by the outer section of the spindle and movable therewith to cause disengagement of the detent by the retaining means to thereby release the spindle, and a spring adapted to normally urge the rollback out of engagement with the abutment.

9. 1n a door lock mechanism including a retractor, a

rotatable rollback for operating said retractor, an outer operating member for rotating said rollback, an inner operating member for also operating the retractor, and an abutment engageable by the rollback for preventing rotation thereof by the outer operating member; a spindle slidable longitudinally through said retractor and rollback and including an inner and an outer section, a spring between said sections, a shoulder on the outer section of the spindle for moving the rollback into engagement with the abutment, retaining means carried by the retractor, a detent on the inner section of the spindle engageable with said retaining means, manually operable push button means movable through the inner operating member for sliding said spindle outwardly to move the rollback into engagement with the abutment and the detent on the spindle into engagement with the retaining means to thereby retain the rollback in engagement with the abutment, disengaging means carried by the outer section of the spindle and movable therewith independently of the inner section and against the tension of the spring between said sections for disengaging the retaining means from the detent to thereby release the spindle, and a spring adapted to urge the rollback, spindle and push button means inwardly to normal undogging position when the spindle 1s released.

10. In a door lock mechanism including a retractor, a rollback for moving said retractor, an outer operating member for rotating said rollback, an inner operating member for operating said retractor, and an abutment engageable by said rollback; a spindle longitudinally slidable through said retractor and rollback and including an lnner section, an outer section movable relatively to the inner section, a shoulder on said outer section for engaging the rollback, a manually operable member movable through the inner operating member for moving said spindle outwardly and thereby moving the rollback into engagement with the abutment to prevent operation of the rollback by the outer operating member, retaining means carried by the retractor and engageable with the inner section of the spindle to retain the said rollback in engagement with the abutment, disengaging means carried by the outer section of the spindle and movable therewith independently of the inner section for causing disengagement of the retaining means from the inner section of the spindle to permit inward movement thereof, a spring for moving the spindle inwardly and the rollback tout of engagement with the abutment when the said inner section is disengaged from the retaining means, and key controlled means in the outer operating member for causing inward movement of the outer section of the spindle and operation of the disengaging means thereon.

11. The subject matter set forth in claim 9 wherein the inner and outer sections of the spindle are telescoped one within the other.

12. In a door lock including a casing, a retractor for a latch bolt, an inner and an outer operating member for operating said retractor and dogging means for dogging the outer operating member against operation, a longitudinally movable spindle unit extending through said operating members and including two relatively movable sections, the outer of which carries said dogging means, means operable through the inner operating member for moving said spindle unit longitudinally to carry said dogging means into dogging position, means engageable with the inner section of the spindle for retaining said spindle and dogging means in dogging position and means operable through the outer operating member for moving the outer section of said spindle independently of the inner section and into engagement with said retaining means to cause the release of the inner section and movement of said spindle unit and dogging member out of dogging position.

References Cited in the tile of this patent UNITED STATES PATENTS 722,619 Phelps Mar. 10, 1903 769,768 Phelps Sept. 13, 1904 834,994 Phelps Nov. 6, 1906 1,755,434 Ellingson Apr. 22, 1930 2,018,093 Schlage Oct. 22, 1935 2,038,907 Schlage Apr. 28, 1936 

